All articles of this category The syntheses of peripherally substituted metal phthalocyanines (C 8 H 17 OCH 2 ) 8 PcM with M = Co, Ni and Pb are described. The macrocycle (C 8 H 17 OCH 2 ) 8 PcCo is reacted with sodium cyanide under oxidative conditions to give the cyano-bridged compound [(C 8 H 17 OCH 2 ) 8 PcCoCN] n . All of the substituted metal phthalocyanines show liquid crystalline properties with phase transitions between 53.8°C and 94°C. Their liquid-crystal properties were demonstrated by DSC measurements and by polarization microscopy.
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Hanack et al. (1987) studied this question.
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